that sucks man, i hate coolant issues. one thing that i have noticed is that the bmw collant system stays hot for quite a while after the car is off so you have to wait at least a couple hours before you remove the cap or risk having it shoot out at you and burn hands. i'm going to be in seattle for the weekend if you wanted some help. i obviously don't have a car to get to your place but am always down to lend a hand.